Ametek Thermox 2000 ATEX Series User Manual page 146

LED
INDICATOR
DS1
DS2
6-18 | Thermox Series 2000 WDG-HPII / HPIIC - ATEX
Sensor Board (80471SE) LEDs
Two diagnostic LED indicators are on the sensor board. DS1 is located near
the relay on the board and DS2 is located near the end of the numbered
terminal strip.
STATUS
GREEN
OFF
OFF
OFF
Blinking GREEN
GREEN
Blinking GREEN &
Blinking RED
Blinking RED
RED
YELLOW
FUNCTION
Oxygen cell furnace over-temperature shutdown
circuit status
Furnace is operating normally
Over temperature shut-down has been activated
No 15 Volt DC power provided to sensor board from
control unit
Sensor enclosure internal temperature monitor
Oxygen-only system (no RTD and SW1 all positions
to "ON")
Sensor enclosure not at setpoint temperature
Sensor enclosure at setpoint temperature
Sensor enclosure over temperature
Switch setup invalid
Sensor temperature RTD circuit error (RTD open or
shorted)
Indeterminate error